Mechanical movement for grain-binders



(No Model.)

B. F. STEWART.

MECHANICAL MOVEMENT FOR GRAIN'BINDERS. No. 473,976. Patented May 3,189.21.

A TTORIVE' UNITED STATES PATENT OFFICE.

BENJAMIN F. STEWART, OF CANTON, OI-IIO.

MECHANICAL MOVEMENT FOR GRAIN-BINDERS.

SPECIFICATION forming part of Letters Patent No. 473,976, dated May3,1892.

Application filed February 26, 1890. $eria1N0.341,882. (No model.)

To all whom it may concern.-

Be it known that I, BENJAMIN F. STEWART, a citizen of the United States,and a resident of Oanton, county of Stark, State of Ohio, have inventeda new and useful Improvement in Mechanical Movements for Grain-Binders,of which the following is a full, clear, and exact description,reference being had to the accompanying drawings, making part of thisspecification.

My invention relates to an improvement in mechanical movements forgrain-binders and it consists in providing shafts and cranks constructedas hereinafter described and connected by a double pitman for thepurpose of communicating a rotary motion from one shaft to another, bothrotating in the same direction with a positive regular movement withoutthe use of interjacent helpers or fulcrums.

The objects of my invention are to simplify the means of revolving theknotter-shaft in grain-binders, to lighten the structure, and reduce theinitial cost.

With these ends in view my invention consists of the construction andcombination of parts, as hereinafter described, and pointed out in theclaim.

Figure 1 of the accompanying drawings is a view in perspective of abinder, illustrating my invention; Fig. 2, a side elevation, and Fig. 3an end elevation.

Similar letters of reference indicate corresponding parts in all of thefigures of the drawings.

As my invention is alike applicable to many of the well-knownharvester-binders, I will proceed with the description thereof,referring to the binder parts only as conjunctional thereto.

A represents the binder-frame, in which is mounted parallel shafts B 0,having cranks D E on their outer ends, substantially as shown.

The shaft J will be known as the packershaft, 15 as the binder-actuatingshaft, and O as the knotter-shaft. To provide a steady and uniformrotary movement of the knotter-shaft O a third crank F is provided,having its inner end loosely mounted on a stud G. The three cranks D, E,and F are of equal length, the wrist-pins at describing circles of equaldiameter. A pitman H is provided, having one of its ends bifurcated ordoubled, the prongs a adapted for a pivotal engagement with the cranks DF, and the other end for a similar engagement with the crank E on theknotter'shaft O.

In Fig. 1 I have shown my invention applied to a grain-binder wheremotion is transmitted from the packer-shaftJ to the binderactuatingshaft B by means of cogged wheels K and L. The shaft J and wheel K,rotating over and out, as indicated by the arrow, for the purpose ofgiving the packers M the proper upward and outward movement, will rotatethe wheel L and shaft B over and inwardly, as indicated by the arrow.

To rotate the knotter-shaft O in an opposite direction to thepacker-shaft J and in the same direction of the binder-actuating shaftB, that the knotter wheel N may have the desired movement to tie theband and the discharge-arms O a downward and outward movement todischarge the bundles, the cranks D and F are provided, and the pitmanor connecting rod H, adapted for and having pivotal engagement with saidcranks D F and with the crank E, the rotary movement of thedriving-crank D,through its connection with the pitman II, will rotatethe crank E, which serves as a fulcrum to crank D, by which thedriving-power is applied laterally, giving to the pitman an up-and-downand back-andforth movement and to the crank E and shaft C a rotarymovement without the use of intervening helpers or fulcrums, the endwisemovement of the pitman being parallel with the end portion a of thebinder-frame A.

To rock the needle-shaft P to raise and lower the needle. Q, a crank Ris mounted on the end of said shaft and is connected with the crank D bythe link S.

In operation the driving-power is transmitted to the packer-shaft J, andthe spurpinion K, which meshes into an external gearwheel L, connectedby the shaft B to the crank D and by the forked ends of the pitman tothe crank F, causing the cranks to revolve, which being connected by thepitman H to the crank E, which is rigidly connected to theknotter-shaft, the latter is caused to positively rotate in the samedirection with the double cranks D and F, thus operating the knottermechanism and the needle, whose thereof, a pitman H, having one endpivoted shaft is attached to the crank D by the crank to said crank andits opposite forked end piv- I 5 R and link S. oted to the cranks D andF, a needle-shaft P,

Having thus fully described the nature and a crank R, secured to the endthereof, and a' 5 object of my invention, what I claim as new, link S,pivoted to the crank R and to the end and desire to secure by LettersPatent, is of the crank D, substantially as set forth.

The combination of the packer-shaft J,pro- In testimony whereof I havehereunto set 20 vided with a gear-wheel, the binder-actuating my handthis 10th day of January, A. D. 1890. shaft B, provided with agear-wheel in mesh BENJAMIN F STEWART 10 with the first-namedgear-wheel, a stud G,

fixed to the frame, cranks D and F, secured Vitnesses: to the shaft Band stud G, respectively, a W. K. MILLER, knotter-shaft O, a crank E,secured to the end CHAS. R. MILLER.

